Oil burner



M. BRITTAIN OIL BURNER March 20, 1934.

Filed Sept. 13, 1955 Monroe r/ztt 091572/ ATTOR N EY Patented Mar. 20, 1934 f UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to an oil burner especially adapted for locomotives and is an improvement over the type of burners set forth in my U. S. Letters Patent granted January 17, 1933 and '5 numbered 1,894,481 and has for the primary object the provision of means for eiectively preheating the oil and the air and to deliver a certain amount of preheated oil to the steam prior to the latter reaching the spray nozzle.

With these and other objects in view this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

15 For a complete understanding of my invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a vertical sectional view illustrating an oil burner constructed in accordance with my invention and showing the same applied to the wall of a irebox of a locomotive.

Figure 2 is a transverse sectional view taken on the line 2 2 of Figure 1.

Figure 3 is a sectional view taken on the line 3-3 of Figure l.

Referring in detail to the drawing, the numeral l indicates the Wall of a iirebox of a locomotive and has extending therethrough a tubular oil chamber 2 with the major portion of said chamber located within the rebox and the outer end of the chamber connected to a T-shaped coupling 3. one leg of which is provided with a nipple 4 for connection to an oil supply pipe, not shown. The oil is controlled from the supply to the chamber 2 in any suitable manner, The inner end of the chamber 2 is connected to a vertically arranged chamber 5, the upper end of which is closed by a removable plug 6 and the lower end provided with a screw threaded nipple 7 to receive the screw threaded portion of an oil discharge pipe 8, the upper end of which terminates adjacent the plug 6. In order for the oil to flow out of the chamber 2 and chamber 5, the height of the oil must exceed the height of the discharge pipe 8, consequently the chambers 2 and 5 are maintained substantially filled with oil.

Extending through the wall 1 below the chamber 2 is a mixing chamber 9, the inner end of which has connected thereto a nozzle 10. Extending into the chamber 9 is a steam pipe 11 whose inner end terminates within the nozzle 10 and in the form of a jet 12. The chamber 9 is connected at its outer end to a T-shaped '55 coupling 13, one leg of which is provided with an internally screw threaded nipple 14 having a threaded connection with the steam pipe. The steam pipe is connected in any suitable manner to a steam source, not shown, and having a control valve. Another leg of the coupling 13 is threaded to a connecting member 15 having threaded connection with the coupling 3 of the chamber 2 and provided with a. passage 16, one end of which is connected to a discharge pipe 17 extending into the steam pipe, as shown at 18. The upper end of the passage 16 is connected to one end of an oil pipe 19 which extends through the chamber 2 into the chamber 5 and terminates in an upwardly curved portion 20. The end of the curved portion 20 is disposed in a plane slightly below the upper end of the oil discharge pipe 18 so that oil from the chambers 2 and 5 will always flow into the pipe 19 and thence into the steam pipe for mixture with the steam prior to the escape of the latter through n the jet 12. The nozzle 10 is disposed under the lower end of the oil discharge pipe 8 so that the oil gravitating from the pipe 8 and the combined steam and oil escaping from the nozzle will thoroughly mix and burn in a flame spreading over a large area within the rebox. The passage of the steam and oil from the jet 12 through the nozzle 10 will create in the chamber 9 a suction and connected to the chamber 9 or the coupling 13 thereof are air pipes 21 which 35kv extend into and out of the rebox with their @ree ends open to the atmosphere. With this construction the air is drawn through the pipes and preheated before entering the chamber 9 and will mix with the combined steam and oil 6o when escaping through the nozzle 10, causing a thorough combustion of the fuel when ignited. The chamber 2 has a major portion thereof along with the chamber 5 confined within the flrebox of the locomotive so that the oil will be preheated 'prior to entering the steam pipe and also prior to being deposited on the deflecting plate of the nozzle. The nozzle is substantially of the same construction as defined in my patent heretofore referred to.

A burner of this character will afford maximum heat with a consumption of fuel and is so constructed that the nozzle will be fed with a proper mixture of steam, air and oil at all times and especially at such time when 195 the locomotive is at rest or not requiring a large volume of steam in its boiler. This will reduce smoke from the boiler to a minimum.

While I have shown and described the preferred embodiment of my invention, it will "be 11'0 understood that minor changes in construction, combination and arrangement of parts may be made Without departing from the spirit and scope of my invention, as claimed.

Having described the invention, I claim:

1. An oil burner comprising oil and air chambers mounted to extend into a re box, means for admitting oil to the oil chamber, a nozzle carried by the air chamber, an oil pipe projecting into the oil chamber and having one end disposed over the nozzle, a steam pipe entering the air chamber and nozzle and terminating in a jet, a pipe extending from the oil chamber into the steam pipe, and pipes connected to the vair chamber and extending into the firebox and out of the latter for communication with the atmosphere.

2. An oil burner comprising oil and air chambers, means for connecting said chambers, a nozzle carried by the air chamber, an oil receiving chamber carried by the oil chamber and disposed over the nozzle, an oil discharge pipe extending into the oil receiving chamber and terminating at its lower end above the nozzle, an oil pipe in the oil chamber and having one end curved and terminating in a plane below the vupper end of Athe oil discharge pipe, said means having a passage to receive the other end ofthe oil pipe, a steam pipe entering the air chamber and terminating in a jet Within the nozzle, means for connecting the passage to the steam pipe, and air pipes connected to the air chamber.

MONROE BRITTAIN. 

